On-line cleaning device for density meter of desulfurization curing tank

Abstract

The utility model relates to an on-line cleaning device for a densimeter of a desulfurization curing tank. The on-line cleaning device comprises a process water pump, the lime curing tank is connected with the process water pump through a first water inlet pipeline; the density meter is connected with the lime curing tank; one end of the second water inlet pipeline is connected with the first water inlet pipeline, and the other end of the second water inlet pipeline is connected with the densimeter; and the water inlet valve is arranged on the second water inlet pipeline. By introducing the second water inlet pipeline from the hole in the first water inlet pipeline of the process water pump and connecting the second water inlet pipeline to the densimeter, when scale is found to be deposited on the densimeter, the water inlet valve can be opened to introduce flushing water to the densimeter to flush a detection element of the densimeter, so that online cleaning of the densimeter is realized; the desulfurization production is not influenced. The device is simple in structure, convenient to operate and high in adaptability.

Description

Technical Field

[0001] This utility model relates to a cleaning device, and more particularly to an online cleaning device for a desulfurization maturation tank density meter. Background Technology

[0002] In the existing technology, the density meter of the lime slaking tank for desulfurization of power generation is used to detect the density of slurry in the slurry tank online. The density data and differential pressure transmitter are used to calculate the liquid level in the tank. Then, the water inlet and lime powder are adjusted, and the slurry is stirred evenly by a stirrer to achieve the concentration required by the production process.

[0003] Currently, after prolonged use, scale easily accumulates on the detection element and pipeline of the slurry tank densitometer, leading to inaccurate and large deviations in the densitometer's readings. This, in turn, causes inaccurate level gauge measurements, making it impossible to determine the actual liquid level and affecting the desulfurization process. Furthermore, inaccurate densitometer measurements make it difficult to control the amount of lime powder. Excessive lime powder can cause the tank to overheat and burn the internal scales of the calcination tank.

[0004] After scale buildup on the density meter's detection elements and pipelines, manual removal of the density meter's detection elements and pipelines is required for offline cleaning or unblocking. During the cleaning process, the liquid level in the tank must be lowered below the level gauge interface. The equipment is shut down during removal. The entire cleaning process is time-consuming, labor-intensive, and affects production. Furthermore, the lime slurry used during removal is corrosive and can easily splash onto the skin, causing burns and posing certain safety risks. Utility Model Content

[0005] The purpose of this invention is to provide an online cleaning device for the density meter of a desulfurization maturation tank, which solves the problem that the density meter of a desulfurization maturation tank cannot be cleaned online in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides an online cleaning device for the densitometer of a desulfurization maturation tank, comprising:

[0008] Process water pumps;

[0009] A lime slaking tank, wherein the lime slaking tank is connected to the process water pump via a first water inlet pipe;

[0010] A densitometer, which is connected to the lime slaking tank;

[0011] A second water inlet pipe, one end of which is connected to the first water inlet pipe, and the other end of which is connected to the densitometer;

[0012] A water inlet valve is installed on the second water inlet pipe.

[0013] Furthermore, a main inlet valve is installed on the first inlet pipe.

[0014] Furthermore, an agitator is installed in the lime slaking tank, and the agitator is connected to a motor installed on the top of the lime slaking tank.

[0015] Furthermore, a shut-off valve is provided between the densitometer and the lime slaking tank, the shut-off valve being used to disconnect the densitometer from the lime slaking tank.

[0016] Furthermore, the inlet valve is a butterfly valve.

[0017] Furthermore, the flushing outlet of the second water inlet pipe is located above the detection element of the densitometer.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses an online cleaning device for a densitometer in a desulfurization maturation tank. A second inlet pipe is introduced through a hole in the first inlet pipe of the process water pump, and the second inlet pipe is connected to the densitometer. When scale is found on the densitometer, the inlet valve can be opened to introduce flushing water to the densitometer to flush the detection element of the densitometer, thereby achieving online cleaning of the densitometer without affecting desulfurization production. Attached Figure Description

[0020] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 This is a plan view of a desulfurization maturation tank and a density meter in the existing technology;

[0022] Figure 2 This is a plan view of an online cleaning device for a desulfurization maturation tank density meter provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the combined operation of the densitometer and the second water inlet pipe provided by this utility model;

[0024] The reference numerals in the attached figures are explained as follows:

[0025] 1. Process water pump; 2. Lime slaking tank; 201. Agitator; 202. Motor; 203. Shut-off valve; 3. First water inlet pipe; 301. Main water valve; 4. Densitometer; 401. Detection element; 5. Second water inlet pipe; 501. Rinsing outlet; 6. Water inlet valve. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] See Figure 1 and Figure 2 Compared with the device diagrams of existing technologies, the online cleaning device for the desulfurization slaking tank density meter disclosed in this utility model includes a process water pump 1, a lime slaking tank 2, a first water inlet pipe 3, a density meter 4, a second water inlet pipe 5, and a water inlet valve 6.

[0028] Specifically, the aforementioned process water pump 1 and lime slaking tank 2 are connected via a first water inlet pipe 3, and the process water pump 1 supplies water to the lime slaking tank 2 for desulfurization operations. Furthermore, in this embodiment of the invention, a main water valve 301 is provided on the aforementioned first water inlet pipe 3 to control the shut-off of the water supply to the first water inlet pipe 3.

[0029] In this embodiment of the invention, a stirrer 201 is provided in the lime slaking tank 2. One end of the stirrer 201 is connected to a motor 202 installed on the top of the lime slaking tank 2, and the other end of the stirrer 201 is connected to stirring blades. The stirrer 201 is driven by the motor 202 to perform stirring operations in the lime slaking tank 2, ensuring that the lime slurry in the tank is stirred evenly.

[0030] The aforementioned densitometer 4 is connected to the aforementioned lime slaking tank 2 to monitor the real-time density of the lime slurry inside the tank. Slurry density is a crucial indicator for determining the start-up and shutdown of the desulfurization system. The magnitude of the slurry density directly affects the operating status of the desulfurization system, and thus the desulfurization efficiency; therefore, accurate measurement of the slurry density is necessary. For the type of densitometer 4 used, a differential pressure densitometer, a tuning fork densitometer, or an ultrasonic densitometer can be selected. The specific type can be chosen according to requirements. The number of densitometers 4 can be rationally selected based on actual production conditions; they can be installed at different locations within the lime slaking tank 2 to monitor the slurry density values ​​at different points within the tank.

[0031] In this embodiment, two densitometers 4 are provided to ensure that if one densitometer 4 fails or becomes unusable, the other densitometer 4 can be activated to maintain normal system operation. The two densitometers 4 are connected in parallel.

[0032] In this embodiment of the invention, the densitometer 4 is installed on the side of the aforementioned lime slaking tank 2. Furthermore, the operating speed of the agitator 201 should be set reasonably, taking into account the volume of the lime slaking tank 2, the amount of slurry inside the tank, and the viscosity of the lime slurry. This avoids situations where the flow rate of the lime slurry is too low, leading to a reduced ability of the slurry to carry solid substances in the lime slurry, which could cause the densitometer 4 to become clogged.

[0033] In addition, in this embodiment of the invention, a shut-off valve 203 is provided between the aforementioned density meter 4 and the lime slaking tank 2. The shut-off valve 203 is used to disconnect the connection between the density meter 4 and the lime slaking tank 2. When it is necessary to inspect, maintain, or replace the density meter 4, the density meter 4 can be removed from the tank through the shut-off valve 203.

[0034] Regarding the flushing of the densitometer 4, in this embodiment of the invention, a second water inlet pipe 5 is provided. One end of the second water inlet pipe 5 is connected to one end of the aforementioned first water inlet pipe 3, and the other end is connected to the densitometer 4. Water from the process water pump 1 is introduced into the densitometer 4 through the second water inlet pipe 5, thereby flushing and descaling the detection element 401 of the densitometer 4. In this embodiment of the invention, see [reference needed]. Figure 3 The flushing outlet 501 of the second water inlet pipe 5 is set above the detection element 401 of the densitometer 4. With this setting, the detection element 401 can be flushed by the flushing water in the second water inlet pipe 5 without stopping the machine, and the flushing effect is good.

[0035] In addition, in this embodiment of the invention, an inlet valve 6 is provided on the aforementioned second water inlet pipe 5 to control the shut-off of the water supply to the second water inlet pipe 5. The inlet valve 6 is a butterfly valve, which has good fluid control capabilities, enabling rapid opening and closing and precise flow regulation. Furthermore, the butterfly valve has a compact structure, occupying less space than other types of valves (such as gate valves or ball valves), making it suitable for applications with limited space. The butterfly valve has a short opening and closing time, making it suitable for applications requiring rapid response and offering strong adaptability. In this embodiment, the number of inlet valves 6 is consistent with the number of densitometers 4, with one valve and one densitometer working together.

[0036] In summary, the online cleaning device for the densitometer of the desulfurization maturation tank disclosed in this utility model introduces a second inlet pipe 5 through an opening in the first inlet pipe 3 of the process water pump 1, and connects the second inlet pipe 5 to the densitometer 4. When scale is found on the densitometer 4, the inlet valve 6 can be opened to introduce flushing water to the densitometer 4 to flush the detection element 401 of the densitometer 4, thus achieving online cleaning of the densitometer 4 without affecting desulfurization production. The device has a simple structure and is easy to operate.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. An online cleaning device for a desulfurization maturation tank densitometer, characterized in that, include: Process water pump (1); The lime slaking tank (2) is connected to the process water pump (1) through the first water inlet pipe (3); Densitometer (4), which is connected to the lime slaking tank (2); The second water inlet pipe (5) has one end connected to the first water inlet pipe (3) and the other end connected to the density meter (4); Water inlet valve (6), which is installed on the second water inlet pipe (5).

2. The online cleaning device for the densitometer of a desulfurization maturation tank according to claim 1, characterized in that, The first water inlet pipe (3) is equipped with a main water valve (301).

3. The online cleaning device for the densitometer of a desulfurization maturation tank according to claim 1, characterized in that, A stirrer (201) is installed in the lime slaking tank (2), and the stirrer (201) is connected to a motor (202) installed on the top of the lime slaking tank (2).

4. The online cleaning device for the densitometer of a desulfurization maturation tank according to claim 1, characterized in that, A shut-off valve (203) is provided between the densitometer (4) and the lime slaking tank (2), and the shut-off valve (203) is used to disconnect the connection between the densitometer (4) and the lime slaking tank (2).

5. The online cleaning device for the densitometer of a desulfurization maturation tank according to claim 1, characterized in that, The inlet valve (6) is a butterfly valve.

6. The online cleaning device for the densitometer of a desulfurization maturation tank according to claim 1, characterized in that, The flushing outlet (502) of the second water inlet pipe (5) is located above the detection element (401) of the densitometer (4).

Images